Convert formatting automatically to f-strings

Automatically convert formatting with the following call:
flynt -ll 2000 -v frappy*
Result: 303/381 auto-converted.
Failing conversions will be looked at manually in a follow-up commit.

Change-Id: Icd996b27221202faccc15af78e0380cf52ee37f2
Reviewed-on: https://forge.frm2.tum.de/review/c/secop/frappy/+/30900
Tested-by: Jenkins Automated Tests <pedersen+jenkins@frm2.tum.de>
Reviewed-by: Georg Brandl <g.brandl@fz-juelich.de>
Reviewed-by: Alexander Zaft <a.zaft@fz-juelich.de>

frappy_psi/motorvalve.py

@@ -72,7 +72,7 @@ class MotorValve(PersistentMixin, Drivable):
 
     def write_target(self, target):
         if self.status[0] == ERROR:
-            raise HardwareError('%s: need refrun' % self.status[1])
+            raise HardwareError(f'{self.status[1]}: need refrun')
         self.target = target
         self._state.start(self.goto_target, count=3)
         return self.target